*{
  margin: 0;
  padding: 0;
}
.head1 {
  background-image: url(../images/content02.png);
  background-size: cover;
/* background-image: linear-gradient(to right, #71baff, rgb(19, 135, 244),  #71baff); */
width: 1540px;
height: 240px;
position: relative;
top: -50px;
}
a {
text-decoration: none;
color: #000;
}
.top {
width: 200px;
color: #ffffff;
position: relative;
top: 90px;
left: 700px;
font-family: "李旭科毛笔行书", sans-serif;
font-size: 60px;
}
.top2 {
width: 400px;
height: 50px;
border-bottom: solid 3px rgba(234, 198, 20, 0.842);
font-size: 30px;
font-family: "隶书 Bold", "隶书", "隶书", sans-serif;
}
.top3_1{

position: fixed;

}

.top3 {
background-color: aquamarine;
position: relative;
top: 380px;
left: 1380px;
font-family: "隶书 Bold", "隶书", "隶书", sans-serif;
font-size: 20px;
color: rgb(0, 0, 0);
/* top: 70px;
left: 20px; */
}
p{
width: 1000px;
padding-top: 20px;
/* padding-bottom: 20px; */

text-indent: 2em;
font-family: 仿宋, 楷体;
letter-spacing: 1px;
/* 设置字母间距为1像素 */
line-height: 1.5;
/* 设置行间距为1.5倍行高 */
font-size: 16px;
}
.left {
position: relative;
top: 50px;
margin-left: 100px;
width: 1000px;
height: 2100px;

}
/* .body_1{
background-color:black;
position: absolute;
top: 0px;
left: 420px;
width: 4px;
height: 2000px;
} */
.h3_1{
position: relative; left: -40px; top: 120px;
}
h4{

font-family: "隶书 Bold", "隶书", "隶书", sans-serif;
margin-top: 30px;
}
.directory {
background-color: #ffffff;
position: absolute;
width: 300px;
height: 300px;
border: solid 2px black;

left: 1100px;
top: 0px;
}
.DI1 {
writing-mode: vertical-rl;
font-size: 30px;
background-color: #d7d7d7;
height: 300px;
width: 100px;
font-family: "Courier New", Courier, monospace;
}
.DI2 {
width: 200px;
position: relative;
top: -300px;
left: 130px;
font-size: 25px;
font-family: "Courier New", Courier, monospace;
}
.intro02 {
position: absolute;
top: 350px;
}
.intro03 {
position: absolute;
top: 650px;

}
  .intro03_1{
  position: relative;
  top: 50px;
    width: 1000px;
    height: 300px;
    background-image: url(../images/content01.png);

  }
.intro04 {
position: absolute;
top: 1350px;
}
.intro05 {
position: absolute;
top: 1830px;
}